A novel scheme for all-optical exclusive-OR (XOR) operating at 160 Gb/s is proposed and analyzed by means of numerical simulations. It consists of a Mach-Zehnder interferometer (MZI) where a semiconductor optical amplifier (SOA) is placed in each of its arms. This SOA-MZI setup is coupled to a delay interferometer, which acts as a signal regenerator. It is shown that error-free operation can be achieved at a data rate of 160 Gb/s, indicating that the proposed scheme is not limited by the SOA recovery time.
© 2004 IEEE
Sebastian Randel, Alessandro Marques de Melo, Klaus Petermann, Vincent Marembert, and Colja Schubert, "Novel Scheme for Ultrafast All-Optical XOR Operation," J. Lightwave Technol. 22, 2808- (2004)